Grains

Question: What mass of sand grains would have a total surface area equal to the surface area of a cube 0.8 m on an edge? Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide, which has a density of 2.3 × 103 kg/m3. What mass of sand grains would have a total surface area (the total area of all the individual spheres) equal to the surface area of a cube 0.8 m on an edge?

Answer: I've had a few beers tonight but thought I'd try this as it seemed fun! Ok, lets say the radius of the sand is r so the surface area of one sand is 4πr^2 so the surface area of n grains is A = n4πr^2 If ρ is the density of of silicon dioxide then the mass of on grain is (4/3)πr^3*ρ so the mass of n grains is m = n(4/3)πr^3*ρ Now A must equal the surface of the cube of side d So A = 6d^2 Therefore 6d^2 = n4πr^2 so rearrange for n n = 3d^2 / (2πr^2) Now put this n into the equation for m and your away m = n(4/3)πr^3*ρ m = 2d^2*r*ρ m = 2(0.8^2)*50*10^(-6)*2.3*10^3 = 0.1472 kg So m = 147 g

Question: How many grains of rice are in a cup? Ok, there is this game on the internet that involves vocabulary words and grains of rice. You get a couple grains of rice for every right answer.... So, How many grains of rice are there in a cup

Answer: Pour a cup and count 'em.

Question: How do I know if my dog is allergic to grains? I have always fed my four year old shepherd/lab cross dog foods with grains in it. He sometimes gets pink, irritated ears and itchy skin, but I don't know if they are caused by the grains in his food. I've been feeding him Innova large bites for the past year, and I'm thinking about switching to TOTW Pacific Stream, because it is grain free, contains salmon (which is suppose to be good for dogs) and it is affordable. Any insight or advice? Thanks!

Answer: He could be allergic to the grains, or possibly one of the meats, or a blanket he lays on, the laundry detergent you use, something in the air, etc. All you can do is try a grain free diet and see if the symptoms resolve. If so, your problem is fixed. Allergies can sometimes be very hard to diagnose. EVO (a partner brand of INNOVA) makes grain free foods, and I higly recommend it. As for TOTW- haven't heard of it, but make sure that there is fiber in the foods- fiber (grains provide a lot) helps keep the colon happy.

Question: How can whole wheat grains like bread, cereal, rice, and pasta have improvement in my skin? If I eat a lot of whole-wheat grains like beard, rice, cereal, and pasta what effects does it have to give me beautiful flawless skin? How does it give me flawless skin like Rihanna's?

Answer: Well, the one comment I can make is that whole grains tend to regulate your bodily functions (the loo) and that helps make your skin appear clear and fresh looking.

Question: What kinds of grains can beer be made from? This question is about the grains used to produce of beer, not any other materials that may be involved in its production. More specifically, any exotic or ancient grains that were used. Anything other than the following would be ideal: -Barley -Wheat -Corn -Rice Thanks.

Answer: millet buckwheat Starchy but technically (botanically) a fruit used much in the same wy as wheat triticale

Question: How many grains are in a typical bowl of rice? At www.freerice.com , each word you get right donates 20 grains of rice. The thing is, I have no idea how much that is in practical terms, and I don't really have the patience to sit down and count out an entire bowl of rice. So I was wondering what you all think. just to clarify: a bowl of *cooked* rice.

Answer: There are 7200 in one cup, so depending on the size of your bowl (lets assume a two quart bowl). That would be 8 cups and 57,600 grains of rice

Question: Have you switched to grain free kibble and then back to one with grains? And then did you have an improvement? Since my dog has been on grain free kibble and then a raw diet, her fur has not been as luxurious and the pads of her feet have not been as rich black as they were when on kibble with grains. Have you found similar benefits in kibble with grains or homecooked food with grains?

Answer: Dogs actually have no physiological requirement for carbohydrates at all. If it has been your experience that your dog's condition is superior on kibble with grain to her condition on a raw diet, I would suspect that the raw diet you were feeding was not properly constructed. I gave up feeding all grains and almost all carbohdrates (do feed a bit of veggies and fruits) almost eight years ago. I cannot imagine ever going back to kibble or any commercially prepared dog food ever again.

Question: What is the best way to store bulk grains? I just got a 25lb bag of brown rice and a 25lb bag of steel cut oats. I was just going to put both bags into a large rubbermaid bin (with a lid) and keep them in there. I was planning to use the grains right out of the bags. Now I'm wondering, though, if it the air from always opening the bag every time I want something would cause spoilage earlier. What would be the best way to store these?

Answer: That should be perfect. I store mine in tupperware or Rubbermaid, but the bags aren't that big:) ... You could always use a chip-clip on the top of the bag, inside the bin, too. Or line the bin with a big trash bag, and fold that over the bag with the bulk grains, inside the bin

Question: What is the difference between microsporangia, microspores, and pollen grains? Dealing with the female reproductive cones of gymnosperms, of course. I personally thought microspore and pollen grains were the same thing, but I guess not.

Answer: Microsporangia is a structure where microspores are produced. Microspores are male gametophytes, or called sperms. Pollen grain is a microspore that is produced by flowering plants. Hope it helped :D

Question: How do different grains compare when you are distilling ethanol? Which grains make the most alchohol when you are distilling?

Answer: The most important part of a grain is the starch content for the breakdown into sugars and finally into alcohol. Alcohol can be distilled from all grains but commercially, corn has the greatest starch content and is grown in large quantities.

Question: When cooking rice, what is the best way to get single firm cooked grains that are not stuck together? When I cook rice, it always seem to land up as a big mushy mess. How do I cook it so it comes out as single grains, firm and not stuck together. Is there a particular grain type I should be looking for. Should I buy a rice cooker? Does it have something to do with covering the rice and amount of water?

Answer: use long grain rice, basmati is the best, also dont put too much water, eg i would use 800 ml water or stock to cook 400 g rice, bring the rice to boil first, then cover and cook for 10 minutes over low heat, Good luck

Question: Can putting salt grains up my nose cure a sinus infection? I have an antibiotic resistant sinus infection and I put salt grains and salt water up my nose. Would this kill the bacteria off? I don't have a cold!!!!!!!!!! It's a bacteria. Cold is virus.

Answer: Unfortunately not, however saline flushes can be used to clear local debris.

Question: Are grains harmful to cats in small amounts? I have 2 cats and feed them Innova evo and wellness wet food, so they eat a grain-free diet, but when they smell plain popcorn or kashi puffed grains they go crazy and beg, and I caught them with their head in my cereal bowl today when I turned away. Are these OK treats in small amounts (like a few pieces)? I don't feed table food to them but they beg all the same...What about adding cooked plain vegetables to their food? Is this a good idea? Thanks!

Answer: The few pieces of popcorn etc will not hurt your cats. Good or you feeding high protein low carb WET - CANNED, Don't give them cooked veggies cats are obligate carnivores. If you have ham or chicken etc for a meal you can use pieces of that for treats. Or sprinkle pieces on the cats regular food. No more than 15% of the food should be human food in the way of protein. Protein is good for them but just pieces of meat or chicken will not give all the nutrients they need. www.catinfo.org read this article for all the healthy choices in food for your cat.

Question: Is it that Coarse grains are ductile and fine grains are strong? All others remaining same... Is it that Coarse grain size gives ductility where as fine grains give strength?

Answer: Fine grain metallury gives ductility and resistance to brittle facture. At least that is true for mild steels. As an example, ASTM A36 is a mild steel that is commonly used for structural materials such as wide flange beams. It is generally considered to not be a fine grain material. ASTM A516 is a mild steel used for pressure vessels and is considered to be a fine grain material. Fine grain in this case is defined as a grain size of 5 or smaller.

Question: Why do grains of sugar dissolve more quickly in tea than do sugar cubes? The answer is among these: A) The sugar grains form a saturated solution. B) The sugar grains have greater surface area. C) The sugar cube is at greater pressure. D) The sugar cube is already at equilibrium.

Answer: The person who said C and bashed B is completely wrong. The idea is not that an individual grain of sugar has a greater surface area than a cube of sugar, but that cumulatively the sum of the surface areas of the grains is larger than that of the cubes. Three things that affect the time it takes to dissolve a substance; Stirring Heat Particle Size (grain vs. cube here) B is correct.

Question: Where can i buy rice grains suitable to cook Risotto in Singapore? I've read that the rice grains they use in risottos aren't the usual rice grains in those 5 or 10kg bags they sell in supermarket, more like high-starch short/medium grain variety. Where could i find them in Singapore? How expensive are they? Thanks!!

Answer: To my understanding for Risotto you can only use arborio or canaroli rice. Try finding it at Cold Storage Supermarket or maybe there is at Mustafa. This type of rice is not available at ordinary supermarket or grocery stall. The cost is much higher then ordinary rice.